278142109998 has 16 divisors (see below), whose sum is σ = 568120055040. Its totient is φ = 90741397496.

The previous prime is 278142109969. The next prime is 278142110003. The reversal of 278142109998 is 899901241872.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 493159488 + ... + 493160051.

It is an arithmetic number, because the mean of its divisors is an integer number (35507503440).

Almost surely, 2^278142109998 is an apocalyptic number.

278142109998 is an abundant number, since it is smaller than the sum of its proper divisors (289977945042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

278142109998 is a wasteful number, since it uses less digits than its factorization.

278142109998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986319591.

The product of its (nonzero) digits is 5225472, while the sum is 60.

The spelling of 278142109998 in words is "two hundred seventy-eight billion, one hundred forty-two million, one hundred nine thousand, nine hundred ninety-eight".